<template>
    <div class="app-container">
      <el-form :model="queryParams" ref="queryRef" :inline="true" v-show="showSearch" label-width="68px">
        <el-form-item label="商品名称" prop="name">
          <el-input
            v-model="queryParams.name"
            placeholder="请输入商品名称"
            clearable
            @keyup.enter="handleQuery"
          />
        </el-form-item>
        <el-form-item label="品牌">
          <el-select
              v-model="queryParams.brandId"
              class="m-2"
              placeholder="选择品牌"
              size="small"
              style="width: 100%"
          >
            <el-option
                v-for="item in queryBrandList"
                :key="item.id"
                :label="item.name"
                :value="item.id"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="分类">
          <el-select
              v-model="queryParams.category1Id"
              @change="selectcategory1"
              class="m-2"
              placeholder="一级分类"
              size="small"
              style="width: 32%;margin-right: 5px;"
          >
            <el-option
                v-for="item in queryCategory1List"
                :key="item.id"
                :label="item.name"
                :value="item.id"
            />
          </el-select>
          <el-select
              v-model="queryParams.category2Id"
              @change="selectcategory2"
              class="m-2"
              placeholder="二级分类"
              size="small"
              style="width: 32%;margin-right: 5px;"
          >
            <el-option
                v-for="item in queryCategory2List"
                :key="item.id"
                :label="item.name"
                :value="item.id"
            />
          </el-select>
          <el-select
              v-model="queryParams.category3Id"
              class="m-2"
              placeholder="三级分类"
              size="small"
              style="width: 32%;"
          >
            <el-option
                v-for="item in queryCategory3List"
                :key="item.id"
                :label="item.name"
                :value="item.id"
            />
          </el-select>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
          <el-button icon="Refresh" @click="resetQuery">重置</el-button>
        </el-form-item>
      </el-form>
  
      <el-row :gutter="10" class="mb8">
        <el-col :span="1.5">
          <el-button
            type="primary"
            plain
            icon="Plus"
            @click="handleAdd"
          >新增</el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
            type="success"
            plain
            icon="Edit"
            :disabled="single"
            @click="handleUpdate"
          >修改</el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
            type="danger"
            plain
            icon="Delete"
            :disabled="multiple"
            @click="handleDelete"
          >删除</el-button>
        </el-col>
        <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
      </el-row>
  
      <el-table v-loading="loading" :data="productList" @selection-change="handleSelectionChange">
        <el-table-column type="selection" width="55" align="center" />
        <el-table-column prop="id" label="ID" width="60"/>
        <el-table-column label="轮播图" #default="scope" width="200">
          <div style="height: 50px;float: left;">
            <img v-for="(item, index) in scope.row.sliderUrlList"
                :key="index"
                :src="item"
                width="50"
            />
          </div>
        </el-table-column>
        <el-table-column prop="name" label="商品名称" width="160" />
        <el-table-column prop="brandName" label="品牌" />
        <el-table-column prop="category1Name" label="一级分类" />
        <el-table-column prop="category2Name" label="二级分类" />
        <el-table-column prop="category3Name" label="三级分类" />
        <el-table-column prop="unitName" label="计量单位" />
        <el-table-column prop="status" label="状态" #default="scope">
          {{ scope.row.status == 0 ? '未上架' : scope.row.status == 1 ? '上架' : '下架' }}
        </el-table-column>
        <el-table-column prop="auditStatus" label="审核状态" #default="scope">
          {{ scope.row.auditStatus == 0 ? '未审核' : scope.row.auditStatus == 1 ? '通过' : '驳回' }}
        </el-table-column>
        <el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="250">
          <template #default="scope">
            <el-button v-if="scope.row.auditStatus == 0" link type="primary" icon="Edit" @click="handleUpdate(scope.row)">修改</el-button>
            <el-button v-if="scope.row.auditStatus == 0" link type="primary" icon="Delete" @click="handleDelete(scope.row)">删除</el-button>
            <el-button v-if="scope.row.auditStatus == 0" link type="success"  @click="handleAudit(scope.row.id, 1)">通过</el-button>
            <el-button v-if="scope.row.auditStatus == 0" link type="danger"  @click="handleAudit(scope.row.id, -1)">驳回</el-button>
            <el-button v-if="scope.row.auditStatus == 1 && (scope.row.status == 0 || scope.row.status == -1)" link type="primary" @click="handleUpdateStatus(scope.row.id, 1)">上架</el-button>
            <el-button v-if="scope.row.auditStatus == 1 && scope.row.status == 1" link type="primary" plain @click="handleUpdateStatus(scope.row.id, -1)">下架</el-button>
          </template>
        </el-table-column>
      </el-table>
  
      <pagination
        v-show="total>0"
        :total="total"
        v-model:page="queryParams.pageNum"
        v-model:limit="queryParams.pageSize"
        @pagination="getList"
      />
  
      <!-- 添加或修改商品对话框 -->
      <el-dialog :title="title" v-model="open" width="60%" append-to-body>
        <el-steps :active="activeIndex" finish-status="success">
          <el-step title="Step 1" description="商品基本信息"></el-step>
          <el-step title="Step 2" description="商品SKU信息"></el-step>
          <el-step title="Step 3" description="商品详情信息"></el-step>
        </el-steps>
        <el-form ref="productRef" :model="form" :rules="rules" label-width="80px" style="margin-top: 20px;">
          <el-divider />
          <div v-if="activeIndex == 0">
            <el-form-item label="商品名称" prop="name">
              <el-input v-model="form.name" />
            </el-form-item>
            <el-form-item label="分类" prop="category3Id">
              <el-cascader
                  :props="categoryProps"
                  v-model="categoryIdList"
                  @change="handleCategoryChange"
              />
            </el-form-item>
            <el-form-item label="品牌" prop="brandId">
              <el-select v-model="form.brandId" class="m-2" placeholder="选择品牌">
                <el-option
                    v-for="item in categoryBrandList"
                    :key="item.id"
                    :label="item.name"
                    :value="item.id"
                />
              </el-select>
            </el-form-item>
            <el-form-item label="计量单位" prop="unitName">
              <el-select
                  v-model="form.unitName"
                  class="m-2"
                  placeholder="计量单位"
              >
                <el-option
                    v-for="item in unitList"
                    :key="item.id"
                    :label="item.name"
                    :value="item.name"
                />
              </el-select>
            </el-form-item>
            <el-form-item label="轮播图" prop="sliderUrlList">
              <el-upload
                  v-model:file-list="sliderTempUrlList"
                  :action="imgUpload.url"
                  :headers="imgUpload.headers"
                  list-type="picture-card"
                  multiple
                  :on-success="handleSliderSuccess"
                  :on-remove="handleRemove"
              >
                <el-icon><Plus /></el-icon>
              </el-upload>
            </el-form-item>
          </div>
          <div v-if="activeIndex == 1">
            <el-form-item label="选择规格">
              <el-select
                  :disabled="form.id != null"
                  v-model="form.specValue"
                  class="m-2"
                  placeholder="选择规格"
                  size="default"
                  @change="handleSpecValueChange"
              >
                <el-option
                    v-for="item in specList"
                    :key="item.specValue"
                    :label="item.specName"
                    :value="item.specValue"
                />
              </el-select>
            </el-form-item>
            <el-form-item label="商品SKU">
              <el-table :data="form.productSkuList" border style="width: 100%">
                <el-table-column prop="skuSpec" label="规格" width="180" />
                <el-table-column label="图片" #default="scope" width="80">
                  <el-upload
                      class="avatar-uploader"
                      :action="imgUpload.url"
                      :headers="imgUpload.headers"
                      :show-file-list="false"
                      :on-success="(response, uploadFile, fileList) =>handleSkuSuccess(response, uploadFile, fileList, scope.row)">
                    <img
                        v-if="scope.row.thumbImg"
                        :src="scope.row.thumbImg"
                        class="avatar"
                    />
                    <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
                  </el-upload>
                </el-table-column>
                <el-table-column label="售价" #default="scope">
                  <el-input v-model="scope.row.salePrice" />
                </el-table-column>
                <el-table-column label="市场价" #default="scope">
                  <el-input v-model="scope.row.marketPrice" />
                </el-table-column>
                <el-table-column label="成本价" #default="scope">
                  <el-input v-model="scope.row.costPrice" />
                </el-table-column>
                <el-table-column label="库存数" #default="scope">
                  <el-input v-model="scope.row.stockNum" />
                </el-table-column>
                <el-table-column label="重量" #default="scope">
                  <el-input v-model="scope.row.weight" />
                </el-table-column>
                <el-table-column label="体积" #default="scope">
                  <el-input v-model="scope.row.volume" />
                </el-table-column>
              </el-table>
            </el-form-item>
          </div>
          <div v-if="activeIndex == 2">
            <el-form-item label="详情图片">
              <el-upload
                  v-model:file-list="detailsImageTempUrlList"
                  :action="imgUpload.url"
                  :headers="imgUpload.headers"
                  list-type="picture-card"
                  multiple
                  :on-success="handleDetailsSuccess"
                  :on-remove="handleDetailsRemove"
              >
                <el-icon><Plus /></el-icon>
              </el-upload>
            </el-form-item>
          </div>
          <div v-if="activeIndex == 3">
            <div style="font-size: large;margin: 30px 30px;">提交成功</div>
          </div>
        </el-form>
        <template #footer>
          <div class="dialog-footer">
            <el-button type="danger" @click="submitForm(-1)" :disabled="activeIndex == 0">上一步</el-button>
            <el-button type="primary" @click="submitForm(1)">{{ activeIndex < 2 ? '下一步' : '提交' }}</el-button>
            <el-button @click="cancel">取 消</el-button>
          </div>
        </template>
      </el-dialog>
    </div>
  </template>
  
  <script setup name="Product">
  import { listProduct, getProduct, delProduct, addProduct, updateProduct, updateStatus, updateAuditStatus } from "@/api/product/product";
  import { listCategory } from "@/api/product/category";
  import { getCategoryBrandAll } from "@/api/product/categoryBrand";
  import { getBrandAll } from "@/api/product/brand";
  import { getUnitAll } from "@/api/product/productUnit";
  import { getCategorySpecAll } from "@/api/product/productSpec";
  import { getToken } from "@/utils/auth.js";
  
  const { proxy } = getCurrentInstance();
  
  const productList = ref([]);
  const open = ref(false);
  const loading = ref(true);
  const showSearch = ref(true);
  const ids = ref([]);
  const single = ref(true);
  const multiple = ref(true);
  const total = ref(0);
  const title = ref("");
  
  const data = reactive({
    form: {},
    queryParams: {
      pageNum: 1,
      pageSize: 10,
      name: null,
      brandId: null,
      category1Id: null,
      category2Id: null,
      category3Id: null,
      status: null,
      auditStatus: null
    },
    rules: {
      name: [
        { required: true, message: "商品名称不能为空", trigger: "change" }
      ],
      category3Id: [
        { required: true, message: "商品分类不能为空", trigger: "change" }
      ],
      brandId: [
        { required: true, message: "品牌不能为空", trigger: "change" }
      ],
      unitName: [
        { required: true, message: "商品单位不能为空", trigger: "change" }
      ],
      sliderUrlList: [
        { required: true, message: "轮播图不能为空", trigger: "change" }
      ]
    },
    imgUpload: {
      // 设置上传的请求头部
      headers: {
        Authorization: "Bearer " + getToken()
      },
      // 图片上传的方法地址:
      url: "http://localhost/dev-api/file/upload"
    }
  });
  
  const { queryParams, form, rules, imgUpload } = toRefs(data);
  
  getList();
  /** 查询商品列表 */
  function getList() {
    loading.value = true;
    listProduct(queryParams.value).then(response => {
      productList.value = response.rows;
      productList.value.forEach(item => {
        item.sliderUrlList = item.sliderUrls.split(',')
      })
      total.value = response.total;
      loading.value = false;
    });
  }
  
  // 取消按钮
  function cancel() {
    open.value = false;
    reset();
  }
  
  // 表单重置
  function reset() {
    form.value = {
      id: null,
      name: null,
      brandId: null,
      category1Id: null,
      category2Id: null,
      category3Id: null,
      unitName: null,
      sliderUrls: null,
      specValue: null,
      status: null,
      auditStatus: null,
      auditMessage: null,
      sliderUrlList: [],
      productSkuList: [],
      detailsImageUrlList: []
    };
    proxy.resetForm("productRef");
  }
  
  /** 搜索按钮操作 */
  function handleQuery() {
    queryParams.value.pageNum = 1;
    getList();
  }
  
  /** 重置按钮操作 */
  function resetQuery() {
    queryCategory2List.value = []
    queryCategory3List.value = []
    proxy.resetForm("queryRef");
    queryParams.value.category1Id = null
    queryParams.value.category2Id = null
    queryParams.value.category3Id = null
    queryParams.value.brandId = null
    handleQuery();
  }
  
  // 多选框选中数据
  function handleSelectionChange(selection) {
    ids.value = selection.map(item => item.id);
    single.value = selection.length != 1;
    multiple.value = !selection.length;
  }
  
  //分类搜索
  const queryCategory1List = ref([])
  const queryCategory2List = ref([])
  const queryCategory3List = ref([])
  const listCategoryList = async (parentId, level) => {
    const { code, data, message } = await   listCategory(parentId)
    if (level == 1) {
      queryCategory1List.value = data
    }
    if (level == 2) {
      queryCategory2List.value = data
    }
    if (level == 3) {
      queryCategory3List.value = data
    }
  }
  const selectcategory1 = () => {
    queryCategory2List.value = []
    queryCategory3List.value = []
    listCategoryList(queryParams.value.category1Id, 2)
  }
  const selectcategory2 = () => {
    queryCategory3List.value = []
    listCategoryList(queryParams.value.category2Id, 3)
  }
  listCategoryList(0, 1)
  //品牌搜索
  const queryBrandList = ref([])
  const getBrandAllList = async () => {
    const { data } = await getBrandAll()
    queryBrandList.value = data
  }
  getBrandAllList()
  
  /** 新增按钮操作 */
  function handleAdd() {
    reset();
    open.value = true;
    title.value = "添加商品";
    console.log(form.value)
    debugger
  
    //清空
    activeIndex.value = 0
    sliderTempUrlList.value = []
    categoryIdList.value = []
    detailsImageTempUrlList.value = []
  }
  
  /** 修改按钮操作 */
  function handleUpdate(row) {
    reset();
    const _id = row.id || ids.value
    getProduct(_id).then(response => {
      form.value = response.data;
      open.value = true;
      title.value = "修改商品";
  
      activeIndex.value = 0
      sliderTempUrlList.value = []
      detailsImageTempUrlList.value = []
  
      //分类赋值
      categoryIdList.value = [
        form.value.category1Id,
        form.value.category2Id,
        form.value.category3Id,
      ]
      // //处理图片
      form.value.sliderUrlList = form.value.sliderUrls.split(",")
      form.value.sliderUrlList.forEach(url => {
        sliderTempUrlList.value.push({ url: url })
      })
  
      //处理详情图片
      form.value.detailsImageUrlList.forEach(url => {
        detailsImageTempUrlList.value.push({ url: url })
      })
  
      //加载分类品牌
      getCategoryBrand()
      //加载分类规格
      getCategorySpec()
    });
  }
  
  /** 提交按钮 */
  const activeIndex = ref(0)
  // function handlePrev() {
  //   if (activeIndex.value-- < 0) activeIndex.value = 0
  //   console.log(activeIndex.value)
  // }
  // function handleNext() {
  //   if (activeIndex.value++ > 3) activeIndex.value = 3
  //   submitForm()
  //   console.log(activeIndex.value)
  // }
  function submitForm(index) {
    proxy.$refs["productRef"].validate(valid => {
      if (valid) {
        activeIndex.value = activeIndex.value + index
  
        //轮播图临时地址重新赋值，否则新上传的图片不显示
        sliderTempUrlList.value = []
        form.value.sliderUrlList.forEach(url => {
          sliderTempUrlList.value.push({ url: url })
        })
  
        //详情图片临时地址重新赋值，否则新上传的图片不显示
        detailsImageTempUrlList.value = []
        form.value.detailsImageUrlList.forEach(url => {
          detailsImageTempUrlList.value.push({ url: url })
        })
  
        if (activeIndex.value == 3) {
          form.value.sliderUrls = form.value.sliderUrlList.join(',')
          if (form.value.id != null) {
            updateProduct(form.value).then(response => {
              proxy.$modal.msgSuccess("修改成功");
              open.value = false;
              getList();
            });
          } else {
            addProduct(form.value).then(response => {
              proxy.$modal.msgSuccess("新增成功");
              open.value = false;
              getList();
            });
          }
        }
      }
    });
  }
  
  /** 删除按钮操作 */
  function handleDelete(row) {
    const _ids = row.id || ids.value;
    proxy.$modal.confirm('是否确认删除商品编号为"' + _ids + '"的数据项？').then(function() {
      return delProduct(_ids);
    }).then(() => {
      getList();
      proxy.$modal.msgSuccess("删除成功");
    }).catch(() => {});
  }
  
  //审核
  function handleAudit(id, status) {
    const msg = status == 1 ? '是否确认审批通过商品编号为"' + id + '"的数据项？' : '是否确认审批驳回商品编号为"' + id + '"的数据项？'
    proxy.$modal.confirm(msg).then(function() {
      return updateAuditStatus(id, status);
    }).then(() => {
      getList();
      proxy.$modal.msgSuccess("操作成功");
    }).catch(() => {});
  }
  
  //上下架
  function handleUpdateStatus(id, status) {
    const msg = status == 1 ? '是否确认上架商品编号为"' + id + '"的数据项？' : '是否确认下架商品编号为"' + id + '"的数据项？'
    proxy.$modal.confirm(msg).then(function() {
      return updateStatus(id, status);
    }).then(() => {
      getList();
      proxy.$modal.msgSuccess("操作成功");
    }).catch(() => {});
  }
  
  //三级分类数据加载
  //加载分类品牌
  const categoryIdList = ref([])
  const categoryProps = ref([])
  categoryProps.value = {
    lazy: true,
    value: 'id',
    label: 'name',
    leaf: 'leaf',
    async lazyLoad(node, resolve) {
      const { level } = node
      if (typeof node.value == 'undefined') node.value = 0
      console.log('=========' + node.value)
      const { code, data, message } = await listCategory(
          node.value
      )
      //hasChildren判断是否有子节点
      data.forEach(function(item) {
        item.leaf = !item.hasChildren
      })
      resolve(data)
    },
  }
  
  //处理分类change事件
  const handleCategoryChange = () => {
    if (categoryIdList.value.length == 3) {
      form.value.category1Id = categoryIdList.value[0]
      form.value.category2Id = categoryIdList.value[1]
      form.value.category3Id = categoryIdList.value[2]
      getCategoryBrand()
      getCategorySpec()
    }
    console.log(categoryIdList.value)
  }
  //加载品牌
  const categoryBrandList = ref([])
  const getCategoryBrand = async () => {
    if (form.value.category3Id == '') {
      proxy.$modal.msgError("请选择分类");
      return
    }
    const { data } = await getCategoryBrandAll(form.value.category3Id)
    categoryBrandList.value = data
  }
  
  //加载商品单位
  const unitList = ref([])
  const getUnitAllList = async () => {
    const { data } = await getUnitAll()
    unitList.value = data
  }
  getUnitAllList()
  
  // 上传商品轮播图图片
  const sliderTempUrlList = ref([])
  const handleRemove = (uploadFile, uploadFiles) => {
    console.log(uploadFile, uploadFiles)
    form.value.sliderUrlList.splice(form.value.sliderUrlList.indexOf(uploadFile.url), 1)
    console.log(form.value.sliderUrlList)
  }
  const handleSliderSuccess = (response, uploadFile) => {
    if(response.code == 200) {
      form.value.sliderUrlList.push(response.data.url)
      console.log(form.value.sliderUrlList)
      console.log('--------------')
      console.log(sliderTempUrlList.value)
    } else {
      proxy.$modal.msgError(response.msg);
    }
  }
  
  //sku图片
  const handleSkuSuccess = (response, uploadFile, fileList, row) => {
    console.log(response)
    console.log(uploadFile)
    row.thumbImg = response.data.url
  }
  
  //加载商品规格
  const specList = ref([])
  const getCategorySpec = async () => {
    if (form.value.category3Id == '') {
      proxy.$modal.msgError("请选择分类");
      return
    }
    const { data } = await getCategorySpecAll(form.value.category3Id)
    specList.value = data
  }
  
  //规格变化，商品sku变化处理，取规格属性值 笛卡尔积生成sku
  const handleSpecValueChange = val => {
    form.value.productSkuList = []
    let specValueList = JSON.parse(form.value.specValue)
    console.log(specValueList)
  
    // let array = [
    //   ['红色', '黑色', '白色'],
    //   ['16G', '32G'],
    // ]
    let array = []
    specValueList.forEach(function(item) {
      let res = []
      item.valueList.map(x => {
        //res.push(item.key + ':' + x)
        res.push(x)
      })
      array.push(res)
    })
    //取数组的笛卡尔积
    let result = array.reduce(
        (a, b, c) => {
          let res = []
          a.map(x => {
            b.map(y => {
              res.push([...x, y])
            })
          })
          return res
        },
        [[]]
    )
    console.log(result)
    result.forEach(function(item) {
      form.value.productSkuList.push({
        skuSpec: item.join(' + '),
        skuSpecList: item,
        price: 0,
      })
    })
  }
  
  // 上传商品详情图片
  const detailsImageTempUrlList = ref([])
  const handleDetailsRemove = (uploadFile, uploadFiles) => {
    console.log(uploadFile, uploadFiles)
    form.value.detailsImageUrlList.splice(
        form.value.detailsImageUrlList.indexOf(uploadFile.url),
        1
    )
    console.log(form.value.detailsImageUrlList)
  }
  const handleDetailsSuccess = (response, uploadFile) => {
    console.log(response)
    form.value.detailsImageUrlList.push(response.data.url)
    console.log(form.value.detailsImageUrlList)
  }
  </script>
  <style>
  .avatar-uploader .el-upload {
    border: 1px dashed var(--el-border-color);
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--el-transition-duration-fast);
    width: 70px;
    height: 70px;
  }
  
  .avatar-uploader .el-upload:hover {
    border-color: var(--el-color-primary);
  }
  
  .el-icon.avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 50px;
    height: 50px;
    text-align: center;
  }
  </style>